Going to work or being present at one's workplace; reporting for duty (the act or state of being at work).
毎朝9時に出勤しています。
I go to work at 9 every morning.
今日は遅れて出勤したので上司に連絡した。
I was late arriving at work today, so I informed my boss.
出勤時間と退勤時間はタイムカードで管理される。
Start and finish times are tracked with a time card.